Daikin Heat Pump Outdoor Unit RXS36LVJU

Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

1. Remove the electronic expansion valve coil.

1 Pull the electronic expansion valve coil out.

You can remove the thermistor ASSY with the electrical box on.

(1) Disconnect [S90] from the electrical box (main PCB).

(2) Release the thermistor harness from the hook at the bottom of electrical box.

(3) Pull out the clamp of the thermistor harness from the hole of the electrical box.

1 Pull out the outdoor heat exchanger thermistor.

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Pull out the 3 lead wires. U: red, V: yellow, W: blue

Remove the overload protector (OL).

Before working, make sure that the refrigerant gas is empty in the circuit.

Be sure to apply nitrogen replacement when heating up the brazed part.

Warning: Use caution to avoid burning yourself with pipes and other parts that are heated by the gas brazing machine.

Warning: If the refrigerant gas leaks during work, immediately ventilate the room. If refrigerant gas is exposed to flames, toxic gas may be generated.

Warning: If the refrigerant oil in the compressor catches fire, have a wet cloth prepared to extinguish the fire immediately.

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Remove the screw on the stop valve mounting plate.

Remove the screw on the partition plate (1).

Remove the 2 screws to detach the ground wires.

Disconnect the connector for fan motor [S70] and release the 4 clamps attached to the electrical box.

Release the fan motor lead wire.

Disconnect the connectors of the front side.

The compressor lead wire is fixed on the partition plate (1) with a clamp.

Pull out the clamp and release the compressor lead wire.

EV connector correctly connected to the PCB

EV generates a latching sound when power is turned off and on again

Continuity present when connector is disconnected and checked with a tester

Check the continuity between the pins

Note: The latching sound varies depending on the valve type.

Check the connection of connector

Check the motor power supply voltage output (pins 4 - 7)

Check the motor control voltage (pins 4 - 3)

Check the rotation command voltage (pins 4 - 2)

Check the rotation pulse (pins 4 - 1)

Sign off on the Fan Motor Connector Output Check